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scsi: qla2xxx: Make sure that aborted commands are freed 

The LIO core requires that the target driver callback functions
.queue_data_in() and .queue_status() call target_put_sess_cmd() or
transport_generic_free_cmd(). These calls may happen synchronously or
asynchronously. Make sure that one of these LIO functions is called in case
a command has been aborted. This patch avoids that the code for removing a
session hangs due to commands that do not make progress.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Fixes: 694833ee00 ("scsi: tcm_qla2xxx: Do not allow aborted cmd to advance.") # v4.13.
Fixes: a07100e00a ("qla2xxx: Fix TMR ABORT interaction issue between qla2xxx and TCM") # v4.5.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2019-08-08 20:02:10 -07:00 committed by Martin K. Petersen
parent bcc8565743
commit 0dcec41acb
2 changed files with 12 additions and 5 deletions
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13
drivers/scsi/qla2xxx/qla_target.c
View File

@ -3206,7 +3206,8 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
(cmd->sess && cmd->sess->deleted)) {
cmd->state = QLA_TGT_STATE_PROCESSED;
return 0;
res = 0;
goto free;
}
ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
@ -3217,9 +3218,8 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
&full_req_cnt);
if (unlikely(res != 0)) {
return res;
}
if (unlikely(res != 0))
goto free;
spin_lock_irqsave(qpair->qp_lock_ptr, flags);
@ -3239,7 +3239,8 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
vha->flags.online, qla2x00_reset_active(vha),
cmd->reset_count, qpair->chip_reset);
spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
return 0;
res = 0;
goto free;
}
/* Does F/W have an IOCBs for this request */
@ -3342,6 +3343,8 @@ out_unmap_unlock:
qlt_unmap_sg(vha, cmd);
spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
free:
vha->hw->tgt.tgt_ops->free_cmd(cmd);
return res;
}
EXPORT_SYMBOL(qlt_xmit_response);

4
drivers/scsi/qla2xxx/tcm_qla2xxx.c
View File

@ -620,6 +620,7 @@ static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
{
struct qla_tgt_cmd *cmd = container_of(se_cmd,
struct qla_tgt_cmd, se_cmd);
struct scsi_qla_host *vha = cmd->vha;
if (cmd->aborted) {
/* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
@ -632,6 +633,7 @@ static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
cmd->se_cmd.transport_state,
cmd->se_cmd.t_state,
cmd->se_cmd.se_cmd_flags);
vha->hw->tgt.tgt_ops->free_cmd(cmd);
return 0;
}
@ -659,6 +661,7 @@ static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
{
struct qla_tgt_cmd *cmd = container_of(se_cmd,
struct qla_tgt_cmd, se_cmd);
struct scsi_qla_host *vha = cmd->vha;
int xmit_type = QLA_TGT_XMIT_STATUS;
if (cmd->aborted) {
@ -672,6 +675,7 @@ static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
cmd, kref_read(&cmd->se_cmd.cmd_kref),
cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
cmd->se_cmd.se_cmd_flags);
vha->hw->tgt.tgt_ops->free_cmd(cmd);
return 0;
}
cmd->bufflen = se_cmd->data_length;